Does anyone have any tips on stamp pages that are easier to complete?

Hey all! Was just wondering if any of you have come across stamp pages that are easier to complete than others. Lowkey want to cry that the few that i have been trying to get done because i really want the avatar, the few that i need left are all 200+ million a piece which is just INSANE. Are there any pages that are cheaper to complete than others? And to you people getting these insane stamps- HOW??